JPS6387617A - Optical pickup device - Google Patents
Optical pickup deviceInfo
- Publication number
- JPS6387617A JPS6387617A JP23233186A JP23233186A JPS6387617A JP S6387617 A JPS6387617 A JP S6387617A JP 23233186 A JP23233186 A JP 23233186A JP 23233186 A JP23233186 A JP 23233186A JP S6387617 A JPS6387617 A JP S6387617A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- light
- base
- hole
- pickup device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 21
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Landscapes
- Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
- Optical Recording Or Reproduction (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的コ
（産業上の利用分野）
本発明は例えば光デイスク装置等において、情報記憶媒
体に光スポットを投影して光学的に情報を読取る光ピッ
クアップ装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention (Industrial Field of Application) The present invention relates to an optical pickup device that projects a light spot onto an information storage medium to optically read information in, for example, an optical disk device.
（従来の技術）
一般に、この種の光ピックアップ装置の主な構成部品は
、光源を有し光源からの光を所定の位置まで導く送光系
部と、情報記憶媒体に光源からの光を集光させて照射す
る対物レンズと、情報記憶媒体の“そり″や“振れ″に
対しての情報を読取り、対物レンズと情報記憶媒体との
距１ｉ１１１を制御３ルノる対物レンズ駆動装置とに分
（プられる。(Prior Art) In general, the main components of this type of optical pickup device are a light transmission system that has a light source and guides the light from the light source to a predetermined position, and a light transmission system that collects the light from the light source on an information storage medium. The objective lens is divided into an objective lens that emits light and an objective lens drive device that reads information about "warpage" and "shake" of the information storage medium and controls the distance 1i111 between the objective lens and the information storage medium. (It is pulled.
その対物レンズ駆動装置は、送光系部を収納保持する框
体に固定されているが、対物レンズの光軸中心と、送光
系部の光軸中心は、角度にして少なくとも±１０分以内
に納めなければ、情報の正確な読取りは困難である。The objective lens drive device is fixed to a frame that houses and holds the light transmission system, but the optical axis center of the objective lens and the optical axis center of the light transmission system are within at least ±10 minutes in terms of angle. It is difficult to read the information accurately unless it is stored within the range.
しかし、構成部品の機械的公差などにより、ただ単純に
対物レンズ駆動装置を送光系部に固定しただけでは、対
物レンズと送光系部との光軸中心が一致しないのである
。However, due to mechanical tolerances of the components, simply fixing the objective lens drive device to the light transmission system does not allow the centers of the optical axes of the objective lens and the light transmission system to coincide.
従って、従来は、光軸中心を一致させるために、対物レ
ンズと送光系部との光軸を一致させられると思われる箇
所例えば対物レンズ駆動装置の基台と、送光系部の框体
との間の箇所にアルミ箔などの薄板を挾み込んで調整を
行なっていたのである。Therefore, conventionally, in order to align the centers of the optical axes, the optical axes of the objective lens and the light transmission system section have to be aligned, such as the base of the objective lens drive device and the frame of the light transmission system section. Adjustments were made by inserting a thin plate such as aluminum foil between the two.
（発明が解決しようとする問題点）
前述した対物レンズ駆動装置の基台と送光系部の框体と
の間の箇所に、アルミ箔などの薄板を挾み込んで調整し
、対物レンズと送光系部との光軸中心を一致させている
のでは、薄板の厚さの設定、挾む箇所の設定などが非常
に繁雑で面倒であ３一
つた。(Problem to be Solved by the Invention) A thin plate such as aluminum foil is inserted between the base of the objective lens driving device described above and the frame of the light transmission system section for adjustment. If the center of the optical axis was made to coincide with that of the light transmitting system, setting the thickness of the thin plate, setting the position of the sandwiching part, etc. would be extremely complicated and troublesome.
本発明は上記問題を鑑み改善したもので、対物レンズと
送光系部との光軸を簡単かつ容易に調整自在に出来るよ
うにした光ピックアップ装置を提供することを目的とす
る。The present invention has been improved in view of the above problems, and an object of the present invention is to provide an optical pickup device in which the optical axis between the objective lens and the light transmission system can be easily and freely adjusted.
［発明の構成］
（問題点を解決するための手段）
本発明は上記目的を達成するために、情報記憶媒体に対
物レンズを介して光束を照射し、その反射光を前記対物
レンズを介して情報を読取る光ピックアップ装置であっ
て、情報記憶媒体上の情報を読取る対物レンズとその対
物レンズを駆動部する駆動部とを支持する基台と、光源
を有し光を所定の位置まで導く送光系部を支持する框体
とがらなり、前記基台に光が通過するために設けられた
孔の第１端面部と、前記框体に光が通過覆るために設け
られた孔の第２端面部との適宜一方の端面部に一方の孔
を囲繞して、他方の内周端縁と線接触する突出部を形成
した構成となっている。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention irradiates a light beam onto an information storage medium through an objective lens, and transmits the reflected light through the objective lens. An optical pickup device for reading information that includes a base that supports an objective lens that reads information on an information storage medium and a drive unit that drives the objective lens, and a transmitter that has a light source and guides the light to a predetermined position. A frame supporting the optical system part is made of glass, and a first end surface of a hole provided in the base for light to pass through, and a second end surface of a hole provided in the frame for light to pass through and cover the frame. The structure is such that a protrusion is formed on one end face of the part, surrounding one hole, and making line contact with the other inner circumferential edge.
（作用）
本発明の装置を採用することにより、対物レンズの光軸
と送光系部の光軸の調整は、基台に光が通過するために
設けられた孔の第１端面部と框体に光が通過するために
設けられた孔の第２端面部との適宜一方の端面部に一方
の孔を囲繞して、他方の孔の内周端縁と線接触する突出
部を調整することにより行なわれる。(Function) By employing the device of the present invention, the optical axis of the objective lens and the optical axis of the light transmission system can be adjusted between the first end face portion of the hole provided in the base for light to pass through and the frame. A second end face of a hole provided for light to pass through the body, and a protrusion that surrounds one of the holes and makes line contact with the inner peripheral edge of the other hole is adjusted as appropriate. This is done by
（実施例）
以下、本発明の実施例を図面に基づいて詳細に説明する
。(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図を参照するに、光デイスク装置における対物レン
ズ駆動装置１は情報記憶媒体としての光ディスク（図示
せず）に光を集光させる対物レンズ３と、その対物レン
ズ３を駆動する駆動部５と、その対物レンズ３および駆
動部５を被ってほぼ中央部に穿設された孔を有する円筒
状のカバー７と、対物レンズ３３３よび駆動部５などを
支持する例えば四角形状の基台９とからなっている。Referring to FIG. 1, an objective lens drive device 1 in an optical disk device includes an objective lens 3 that focuses light on an optical disk (not shown) as an information storage medium, and a drive unit 5 that drives the objective lens 3. , a cylindrical cover 7 that covers the objective lens 3 and the drive unit 5 and has a hole bored approximately in the center, and a base 9 that is, for example, square in shape and supports the objective lens 333, the drive unit 5, etc. It consists of
その基台９のほぼ中央部には孔１１が穿設されると共に
、基台９の下部底面には、対物レンズ３の光軸を中心と
した第１端面部の突出部としての球状１３が形成されて
いる。A hole 11 is bored in the approximate center of the base 9, and a spherical shape 13 is formed on the bottom surface of the lower part of the base 9 as a protrusion of the first end surface centered on the optical axis of the objective lens 3. It is formed.
一方、送光系部１５は、例えば箱型形状の框体１７と、
その框体１７の第１図において右側の側壁に設けられた
光を発生させる半導体レー量ア１９と、その框体１７内
の下部板上面には、半導体レーザ１９から発生された光
を平行光に覆るコリメータレンズ２１及び、プリズム２
３等とが支持されている。しかも、框体１７の上部板１
７Ａにおけるほぼ中央部には、前記基台９の孔１１より
大きな径を有した孔２５が穿設されている。On the other hand, the light transmission system section 15 includes, for example, a box-shaped frame 17;
A semiconductor laser 19 for generating light is provided on the right side wall of the frame 17 in FIG. collimator lens 21 and prism 2
3rd prize is supported. Moreover, the upper plate 1 of the frame 17
A hole 25 having a larger diameter than the hole 11 of the base 9 is bored approximately at the center of the hole 7A.
而して、半導体レーザー１９から発けられる光がコリメ
ータレンズ２１．プリズム類２３および対物レンズ３を
介して、図示省略の情報記憶媒体に照射されるのである
。Then, the light emitted from the semiconductor laser 19 passes through the collimator lens 21. The light is irradiated onto an information storage medium (not shown) via the prisms 23 and the objective lens 3.
前記基台９と框体１７の上部板１７Ａは、互いにねじ２
７．２９で固定されている。基台９と框体１７とは、基
台９の下部底面に形成された第１端面部の突出部として
の球状１３と框体１７の上部板１７Ａに穿設された孔２
５における第２端面部としての端面とが線接触で接して
いる。The base 9 and the upper plate 17A of the frame 17 are connected to each other by screws 2.
It is fixed at 7.29. The base 9 and the frame 17 have a spherical shape 13 as a protrusion of the first end surface formed on the lower bottom surface of the base 9 and a hole 2 bored in the upper plate 17A of the frame 17.
The end face as the second end face portion in 5 is in line contact.
この時、第２図の（Ａ）に示す如く、対物レンズ３の光
軸中心３１と送光系部１５の光軸中心３３が一致してい
れば良いが、第２図の（Ｂ）に示す如く、光軸中心３１
と光軸中心３３とがずれている場合には、調整して光軸
中心３１と光軸中心３３とを一致させなければならない
。At this time, as shown in FIG. 2(A), it is sufficient that the optical axis center 31 of the objective lens 3 and the optical axis center 33 of the light transmission system section 15 coincide, but as shown in FIG. 2(B), As shown, the optical axis center 31
If the optical axis center 31 and the optical axis center 33 are deviated from each other, the optical axis center 31 and the optical axis center 33 must be aligned with each other by adjustment.
光軸中心３１と光軸中心３３とを一致させる手段として
、第１図に示されている複数のねじ２７．２９によって
行なわれる。すなわち、光軸中心３１と光軸中心３３と
を一致させるには、まず締付けていたねじ２７．２９を
緩める。次に、ねじ２７と光軸中心３１に点対称な位置
にあるねじ２９を締め込んでいけば、前記球状１３の曲
率中心を軸とし、基台９の下部底面に設けた球状１３と
、送光系部１５の框体１７における上部板１７Ａに設け
られた孔２５の端面ですべりを生じ、框体１７と基台９
との間でねじ２９の締め込み量に応じた任意の傾き得る
ことができ、光軸中心３１と光軸中心３３とを一致させ
るように調整される。The means for aligning the optical axis center 31 and the optical axis center 33 is achieved by a plurality of screws 27, 29 shown in FIG. That is, in order to align the optical axis center 31 and the optical axis center 33, first loosen the tightened screws 27 and 29. Next, by tightening the screw 29 located point symmetrical to the screw 27 and the optical axis center 31, the spherical 13 provided on the bottom surface of the lower part of the base 9 and Slippage occurs at the end surface of the hole 25 provided in the upper plate 17A of the frame 17 of the optical system section 15, causing the frame 17 and the base 9 to slip.
An arbitrary inclination can be obtained depending on the amount of tightening of the screw 29, and the optical axis center 31 is adjusted to match the optical axis center 33.
その結果、第２図の（８）に示す如く基台９に保持され
ている対物レンズ３は、基台９の傾きに対応し、送光系
部１５からの光軸３３に対し、対物レンズ３の光軸３１
を任意に調整することができる。As a result, as shown in (8) in FIG. 2, the objective lens 3 held on the base 9 corresponds to the inclination of the base 9, and the objective lens 3 optical axis 31
can be adjusted arbitrarily.
第３図は他実施例を示すもので、°対物レンズ駆動装置
１と送光系部１５の構造はほぼ第１図で説明したものと
同じであるから詳細な説明は省略する。第１図に対して
異なる点は、基台９の下部底面に形成せしめた球状１３
の代りに円錐状３５を設けたことである。円錐状３５は
球状１３と同様の効果を有するのである。その効果もほ
ぼ第１図で説明したものとほぼ同じであるから説明を省
略する。FIG. 3 shows another embodiment, and since the structures of the objective lens driving device 1 and the light transmission system section 15 are almost the same as those explained in FIG. 1, detailed explanation will be omitted. The difference from FIG. 1 is that the spherical shape 13 formed on the lower bottom surface of the base 9
The reason is that a conical shape 35 is provided instead. The conical shape 35 has the same effect as the spherical shape 13. The effect is also almost the same as that explained in FIG. 1, so the explanation will be omitted.
なお、本発明は前述した実施例に限定されるものでなく
、適宜な変更を行なうことによりその他の態様で実施し
得るものである。例えば、球状あるいは円錐状を框体の
上部板に穿設した孔を設けて行なうことでも可能である
。Note that the present invention is not limited to the embodiments described above, and can be implemented in other embodiments by making appropriate changes. For example, it is also possible to provide a spherical or conical hole in the upper plate of the frame.
［発明の効果１
以上説明したように本発明によれば、光ピックアップ装
置において、対物レンズと送光系部の光軸を一致させる
ための調整を非常に容易に行なうことができるという効
果を秦する。[Effect of the Invention 1] As explained above, according to the present invention, in an optical pickup device, adjustment for aligning the optical axes of the objective lens and the light transmission system can be made very easily. do.
第１図は本発明を実施した一実施例の光ピックアップ装
置を示す正面断面図である。
第２図の（Ａ）および（Ｂ）は本発明を説明するための
対物レンズの光軸と送光系部の光軸の概念図である。
第３図は第１図に代る他実施例の光ピックアップ装置を
示す正面断面図である。
１・・・対物レンズ駆動装置 ３・・・対物レンズ９・
・・基台 １１・・・孔１３・・・球状
１５・・・送光系部１７・・・框体
２５・・・孔２７．２９・・・ねじ ３
１．３３・・・光軸中心３５・・・円錐状FIG. 1 is a front sectional view showing an optical pickup device according to an embodiment of the present invention. FIGS. 2A and 2B are conceptual diagrams of the optical axis of the objective lens and the optical axis of the light transmission system for explaining the present invention. FIG. 3 is a front sectional view showing another embodiment of the optical pickup device in place of FIG. 1. 1... Objective lens drive device 3... Objective lens 9.
... Base 11 ... Hole 13 ... Spherical
15... Light transmission system part 17... Frame
25...hole 27.29...screw 3
1.33...Optical axis center 35...Conical shape
Claims (4)
、その反射光を前記対物レンズを介して情報を読取る光
ピックアップ装置であつて、 情報記憶媒体上の情報を読取る対物レンズとその対物レ
ンズを駆動する駆動部とを支持する基台と、 光源を有し光を所定の位置まで導く送光系部を支持する
框体とからなり、 前記基台に光が通過するために設けられた孔の第１端面
部と、前記框体に光が通過するために設けられた孔の第
２端面部との適宜一方の端面部に一方の孔を囲繞して、
他方の孔の内周端縁と線接触する突出部を形成してなる
ことを特徴とする光ピックアップ装置(1) An optical pickup device that irradiates a light beam onto an information storage medium through an objective lens and reads information from the reflected light through the objective lens, the objective lens for reading information on the information storage medium and its objective. It consists of a base that supports a drive unit that drives the lens, and a frame that supports a light transmission system that has a light source and guides the light to a predetermined position, and is provided for light to pass through the base. one of the holes is surrounded by an appropriate end surface of a first end surface of the hole provided in the frame and a second end surface of the hole provided for light to pass through the frame,
An optical pickup device characterized by forming a protrusion that makes line contact with the inner peripheral edge of the other hole.
とする特許請求の範囲第１項の記載の光ピックアップ装
置(2) An optical pickup device according to claim 1, characterized in that a protruding portion is provided on the first end surface portion.
範囲第１項に記載の光ピックアップ装置(3) The optical pickup device according to claim 1, wherein the protruding portion is spherical.
の範囲第１項に記載の光ピックアップ装置(4) The optical pickup device according to claim 1, wherein the protrusion has a conical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23233186A JPS6387617A (en) | 1986-09-30 | 1986-09-30 | Optical pickup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23233186A JPS6387617A (en) | 1986-09-30 | 1986-09-30 | Optical pickup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6387617A true JPS6387617A (en) | 1988-04-18 |
Family
ID=16937523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23233186A Pending JPS6387617A (en) | 1986-09-30 | 1986-09-30 | Optical pickup device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6387617A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0341936A2 (en) * | 1988-05-07 | 1989-11-15 | Sharp Kabushiki Kaisha | Tilt adjustment mechanism for object lens driving |
| JPH0273535A (en) * | 1988-09-08 | 1990-03-13 | Mitsubishi Electric Corp | Optical recording and reproducing device |
| EP0538824A2 (en) * | 1991-10-22 | 1993-04-28 | SHARP Corporation | An inclination adjusting device for an objective lens for an optical information recording and reproduction apparatus |
-
1986
- 1986-09-30 JP JP23233186A patent/JPS6387617A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0341936A2 (en) * | 1988-05-07 | 1989-11-15 | Sharp Kabushiki Kaisha | Tilt adjustment mechanism for object lens driving |
| US5008873A (en) * | 1988-05-07 | 1991-04-16 | Sharp Kabushiki Kaisha | Tilt adjustment mechanism for object lens driving device |
| JPH0273535A (en) * | 1988-09-08 | 1990-03-13 | Mitsubishi Electric Corp | Optical recording and reproducing device |
| EP0538824A2 (en) * | 1991-10-22 | 1993-04-28 | SHARP Corporation | An inclination adjusting device for an objective lens for an optical information recording and reproduction apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5508851A (en) | Objective lens posture adjusting mechanism for optical pickup | |
| US5430699A (en) | Optical reading and writing device | |
| US6384944B1 (en) | Integral transmitter-receiver optical communication apparatus | |
| US4437177A (en) | Small-sized video or audio pickup device having a beam deflector disposed within a focusing device support | |
| US4907017A (en) | Laser optical apparatus | |
| US20020012041A1 (en) | Multi-beam scanning apparatus | |
| JP2000113471A (en) | Optical pickup of optical disk drive | |
| JPS6387617A (en) | Optical pickup device | |
| US5247508A (en) | Laser adjusting apparatus tracking control for use with an optical disc | |
| JPH1010447A (en) | Optical scanner | |
| US20050093966A1 (en) | Multibeam light source unit, laser scanning apparatus having the same and method for assembling the laser scanning apparatus | |
| JPH04167232A (en) | Photodetector device | |
| US5289444A (en) | Galvanomirror unit | |
| US6798819B1 (en) | Optical pickup apparatus and method of manufacturing the same | |
| JPH0430648Y2 (en) | ||
| JPH02246023A (en) | Optical tape device | |
| JP2880631B2 (en) | Objective lens tilt adjustment mechanism and optical pickup device | |
| JPH05971Y2 (en) | ||
| JP2822255B2 (en) | Scanning optical device | |
| JPH0227385Y2 (en) | ||
| JPH01173434A (en) | Optical pickup | |
| KR0168135B1 (en) | Optical pick-up assembly for optical disk | |
| JPS6245301Y2 (en) | ||
| KR0125963B1 (en) | Pick-up device for optical disc | |
| JPS60167131A (en) | Optical mechanism of optical information recording and reproducing device |